<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>Lab4-1 星型图案</title>
    <link rel="stylesheet" href="lab4-1.css">
</head>

<body>
    <div class="container">
        <!-- 图案容器：JS 会向此处插入行 -->
        <div id="diamond" aria-label="星型菱形"></div>
    </div>

    <script src="lab4-1.js"></script>
</body>

</html>
<!DOCTYPE html>
<html>
